What was the ancient Jewish pantheon?In Judaism, Satan is a good guy. He just worked for God as prosecutor. Satan simply means adversary. God himself is sometimes called Satan in OT when he became adversary for someone. Unfortunately, translators sometimes translate as adversary and sometimes transliterate that as Satan.

Is there a civilization that never believed in God in the ancient times?That's not true Deut. 32 They stirred him to jealousy with strange gods; with abominations they provoked him to anger. 17 They sacrificed to [b]demons that were no gods[/b], to [b]gods they had never known[/b], [b]to new gods[/b] that had come recently, whom your fathers had never dreaded.